Adjustable-slide structure



May 29. 1921'; 1,671,784

A. RUBIN 'ADJUSTABLE SLIDE STRUCTURE Filed Feb. 21, 1927 Patented May 29,. 1928.

UNITED STATES PATENT OFFICE."

ADOLPH RUBIN, OF LOUIS, MISSOURI, ASSIGNOR TO SIEBEB PRODUCTS MANU- FACTURING commuter s'r. Louis, mssonai, A CORPORATION or MISSOURI.

ADJUSTABLE-SLIDE s'rnuoroma.

Application filed February 21, 1927. Serial No. 170,039.

This invention relates tostructures of the type that comprise a slide or other member I so adjustably mounted on a supporting struc ture or combined with another, member in such a way that the position of the slide or the position of the two members, relatively to each other, can be changed easily.

amples of structures of the kind referred to are telescoped parts of loose leaf binders, and adjustable braces used on furniture.

The object of my invention is to provide a structure of the general type referred to, that is equipped with a novel means of inexpensive construction and of simple-design for securely clamping the two co-operating members of the structure together.

Figure 1 of the drawings is a top plan view, illustrating my invention embodied in a slide that is adjustably mounted on a supa slide or other part adjustably mounted on a susportingmember, I wishit to be understoo that my invention is applicable to various "other kinds of structures comprising two members arranged in sliding ongagement or in telescopic relation and adapted to be adjusted by moving one member longitudinally of the other member.

In the accom anyingdrawings which illustrate the pre erred'form of my invention A designates a slide or other part mounted on a supporting member B in such a way that it can be adjusted longitudinally of said supporting member. The members A andB. are provided with co-operating interlocking portions that hold said members in assembled condition, and a manually-0 perable means is provided for exertingpressure on one of said members in a direction tending to separate or force said members.

apart, and thus cause the co-operating interlocking portions on same to be clamped tightly together, so as to hold the slide A in adjusted position. The slideA and mem 1 B can b of e s sh pe ero s a tion, but I prefer to make the supporting member B substantially trough-shaped in cross section and provide it with" laterallypro ectmg flanges 1 that are embraced or overlapped by hook-shaped portions 2 on the shde A, thereby causing the members A and B to be interlocked with each other in such a way that the slide A can be adjusted longitudinally of the supporting member Bl The clamping of the slide A to the support1ng"member B is effected by turning or osc llating a clamping device C on the slide A, so as to cause said device to exert pressure on the supporting member B in a direction to cause the co-operating interlocking portions 1 and 2 on the members B and A to be drawn into tight en agement 'with each other. In the form of? my invention herein illustrated the clam ing device C consists of a substantially sem1-spherical-shaped member interposed between the slide Aand the member B and provided with a shank or spindle 3 that projects upwardly through the slide and which is rigidly attached at its upper end to a lover or finger piece D that is adapted to be manipulated so as to turn the slide or device C. The device C isprovided on its upper side with a pair of cams or inclined surfaces 4 that cooperate withcams or inclined surfaces 5 on the underside of the slide A to force the device C downwardly (looking at Figures 2 and3), so as f to exert pressure on the member B in a direction to draw the flanges l thereon into tight. engagement with the hook-shaped portions 2 on the slide when the lever or finger piece D ismanipulated to turn the device C in one direction. When the slide A is in its released position, as shown in Figure 3, the high points of the cams 4 onfthe clamping device are in engagement with the low points of the cams o on the underside of the slide A, said cooperatingcams being held in sliding engage ment with each other by a resilient means 6 interposed between the top face of the slide A and the hub of the lever D and herein illustrated as consisting of a splits iral washer. When the leverD is swung rom the position shown in broken lines in Figure 1 into the. position shown in full linesin said figure, the high oints of the cams 4 of the clamping device ride up onto the high points ofwthe cams 5 on the slide, as shown in F gu e 2, eby causi g the device C I to move dowgiwarqlly ,relativel to the slide and exert pressure on the mem er B 111 such a direction that the hook-shaped portions 2 on the slide will be drawn into sufiiciently tight engagement with the flanges \1 on the supporting member B to securely hold the slide in adjusted postion. To release the slide, preparatory to moving it into a diifeb cnt position, it is only necessary to swing the lever D in the reverse direction, i. e., back into the position shown in broken lines in Figure 1,"so as to relieve the clampin pressure of the device C on the ,ncmber In view of the fact that the'clamping device Q is substantially semispherical-shaped in outline, it has a relatively great bearing area. on the member B 'which is preferably of suchcross-sectional shape that it will conform a proximately "to the cross-sectional shape 6 the device C, thereby insurin' the slide being clamped firmly to the mem er on'which it is mounted. If desired, a wear piece 7 consisting of a piece of thin sheet metal that conforms approximately tothe cross-sectional shape of'the supporting member B can be inter osed between the clamping device C and 1e inner side ,of the member B,.so as to preventsaid clamping device from marring the member B, the wear piece 7 having upwardly projecting arms or legs 8 that pass through holes 9 in the slide, as shown clearly in the drawings.

WhileI prefer to form the structure in the manner above described, ,on account of the fact that such a structure is inexpensive to manufacture, it is reliable in operation, and it is strong and rug ed enough to succcssiully withstand roi 1 usage, 'I wish it to be understood that the means used to draw the opposed parts of the two members A and B of the structure into clamping engagement with each .other can be constructed in various .ways without departing from the spirit my invention. Moreoyer, while I have herein illustrated one member of the structure,referred to as the slide, as being provided with substantially hookshaped portions that embrace flanges on' the other member of the structure, referred :to as the supporting member, I wish it to be understood that it is not essential that the two members of the structure be provided with co-operating opposed parts of the particular form shown, as my broad idea consists ,of a structure composed of two telescoped members or two interlocked members arranged in sliding engagement withv each other combined with a means carried by one ofsaid members and adapted to be mani ulated so asto exert pressure on the ot er m mb r n a direct on to draw opposed parts of e em e nt 2 .,e -.v n g e gagement with each other to securely clamp said members and prevent relative movement of same.

Having thus described my invention, what I claimas new and desire to secure by Letters Patent is:

. 1. In astructure of the kinddescribed, the

ing device interposed between said members and provided with a cam that co-o erates with a cam on one of said members 0' cause said device to exert pressure on the. other member 'in a direction to ,draw' the interlocked portions of said embers into snug engagement with each Lot er when said device is turned n one direction. 3. In a structure ofth'ekind described, the com ination of two embers arranged in sliding en 'agement wit each other and provided witfi co-op erat' portions that prevent said members rom pniling apart, an

oscillatable or rotatable clamping device car'- ried by one of said members and arranged in opposed relationto the other member, and means whereby rotaryfmovement of said device in one direction canses said device to exert pressure on the member to which it is opposed in a direction to draw the cooperating 'portions 0 said members into tight engagement With each other, 1

4:. a structure of the kind described, the con'ibinatio i of two interlocked members arranged in sliding engagement with each other, an-oscillatable or rotatable clamping device arran ed between said membersland provided wit a shank that passes through one of said members, lever or finger piece attached to said shank.'co-opei'ati ig cams or inclined surfaces on. said clamping device and on the member which carries said device, and a resilient means for retaining said in engagementwvithLeach other.

5. In a structure of the character described, the combination of two members arranged in sliding engagement with each other and provided with co-operating interlocking portions, one of said members being substantially trough-shaped in cross section, a substantially semi-s herical-shaped clamping device arranged between said members and adapted to be turned or oscillated, and. means whereby rotary movement of said clamping device causes said device to exert pressure on said trough-shaped member in a direction to cause the co-operating interlocking portions on said members to be drawn tightly together.

(3. In a strricture of the character de-- scribed, the combination of two interlocked members arranged in sliding engagement with each other, one of said members being s'iiliistantially trongh-sl'laped in cross section, a substantially semispherical-shaped clamping device arranged. in said trough-shaped member and provided with a shank that projects through the other member, co-operatingjr cams or inclined surfaces on said clamping device and on the member through which said shank passes, a lever 01'' finger,

piece attached to said shank, and a spring interposed between sazd lever and the member through which the shank of the clamping device passes.

7. In a structure of the character described, the combination of two members arranged in opposed relation, one of said members being substantlallv trough-aha ed member that lap over or embrace said flanges, an'oscillatable or rotatable clamping device interposed between said members, cooperating n'ieans on said clamping device and on one of said members for causing said device to exert pressure on the other member in. a direction tending to draw the flanges thereon tightly against the opposed portions the other member, and a wear piece interposed between said clamping device and the flanged member.

Y ADOLPH RUBIN. 

